Safety-razor.



H. G. SHANNON. SAFETY RAZOR. APPLICATION FILED SEPT.Z0, 1909.

1,030,023, Y Patented June 18, 1912.

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"HARRIS c. summon; or CLEVELAND, onro, ASSIGNOR ro'aonn IE. MURRAY, oncnrcaao, rumors.

SAFETY-RAZOR.

Specification 01 Letters Patent. I Patented June 18, 1912.

AppIication filed September 20, 190B. Serial No. 518,683.

To all whom it may concern:

Be it known' that L'HABRIS C. SHANNON,

- .a citizen of the United States, residing at Cleveland, inthe countyof Ouyahogaand 'State of Ohio, have invented a certain new .eutshearingly, and therefore most efiiciently.

The invention consists of" the combination in a safety'razor of aguardplate having.

converging sides with projecting teeth in said sides, which are inclinedrelatively "thereto respectively, and away from the converglng point ofthe sidesaa razor blade 3 having cutting edges which converge at similarangles to the sides of said guard plate; a clamping plat-e; 'means fordraw- :ing the guard plate and clamping plate to-v gather upon'theinterposed blade which is formed to permit of its adjustment for wearbetween said plates in the direction of a plan view of thelrazorlolade.

line which bisects the angle between the cutting edges and to prevent itfrom moving. .therebetween otherw1se; wlth such other characteristicsof. construction as are shown in the drawing andv are hereinafterdescribed and defined by the claims.

In the drawing, Figure 1 is a central longitudinalseetion of 'a safetyrazor embodyin the invention. Fig. 2 is a' plan view of the razor asshown in Fig. 1. .Fig. 3 is a bottom view thereof. Fig. 4 is a view fromthe left side of Fig; 1. Fig. 5 is a central sectional View int-heplaneindicated by line 55 on Fig; 1. Fig. 6 is a so that when therazor'bladeis put between theclamping plate and giuardplate it may beclampedgthereby. T is is the conventional clamping'mechanism; and anyother suitable clamping mechanism may be substituted. a

The razor blade has a blunt dull point at the convergence of its twocuttin edges 1) b. It has also, extending inward from the intermediateside 6 a slot 6 which is flaring at its outer end. The width ofztheinner end of this slot is suchthat it will nicely embrace the squaredshank a,'-and the depth of the slot maybe such that theblunt corner orapex of said blade may engage behind a flange 0 on the correspondingcorner of the guard plate. The acute corner of the clamping plate isalso adapted to go behind and engage this same flange c With theconstruction described, it is not necessary to entirely disconnect theguard plate and clamping plate in order to 'remove or put in a razorblade. The thumb nut D need only be'unserewed far "enough to allow theblade to be moved between said clamping plate and guard plate and overform; but instead of-projccting from said edges at. right anglesthereto, they project at a different angle preferably an angle of about75405 degrees, although the precise Then when the nut D is tightenedangle is not material.- These teeth incline.

away from the point of convergence of the sides of the guardandobviously will lie at the same angle to the edge of the razor blade.Therefore, if one using the razor draws it over his face in thedirection it willbe most easily moved, i. 6. parallel with the directionin which the teeth extend,-- indicated by the arrow on Fig. 3, the razorblade will be drawn shearingly across the face. Thesev obliquelydisposed teeth act as guides when in cont-act with the face,- and helpto govern' the direction of movement of the razor.' Moreover, thedescribed I construction is such that both cutting edges of therazorblade may be sharpened many times and ground away a great deal withoutrendering it unfit for use with the described clampi'ng' and holdingdevices. For

if, .as the cutting edges are ground away,

' the blunt point is also ground down, then the razor blade may be movedlengthwise to carry this blunt edge against the flange c" or close toit; and then the cutting edges will be restored to their proper relationto the corresponding edges of the guard plate.

Having described my invention, I claim 1. In a safety razor, thecombination of a clamping plate having a flat sided shank, and a bluntcorner at which is a flange, a razor blade having a slot extended intothe same from one side, and having, a'blunt end for engagement with saidflange, a toothed guard plate having a blunt corner for engagement withsaid flange, and means engaging said shank for drawing the clampingplate and guard plate together upon said blade.

2. In a safety razor, theeombination of a guard plate having convergingsides; projecting teeth on said sides, inclined relatively thereto,respectively, and away from the converging pointof the sides; a razorblade having cutting edges which converge at a similar angle; a clampingplate; means for drawing the guard plate and clamping plate together uon the interposed blade;

said blade being ormed to permit of its adjustment for Wear,between'said plates, in

the direction of a line which bisects the angle between the cuttingedges and to prevent it from moving therebetween otherwise.

3. In a safety razor, the combination of a guard platehaving convergingsides on which are projecting teeth, inclining relatively to theirrespective sides and away I from the converging point of the sides, a

razor blade having cutting edges which converge at a similar angle, aclamping plate, means for drawing the .guard plate and clamping platetogether upon the interposed blade,said clamping plate being provided.

with the flat-sided shank, andthe blade. havlng a slot cut in from thebase end toward the angle at which the cutting edges converge said slotbeing of such width as'to nicely embrace the flat shank.

4. In a safety razor, the combination of a toothed guard-plate the sidesofwhich converge toward a blunt point, an integral flange on said pointprojecting outwardly, an aperture in the guard plate, a clamping platewith converging sides and a blunt point adapted to lie behind saidflange, and provided with a flat sided shank adapted to pass into theaperture of the guard plate, a razor blade having converging edges and ablunt end adapted to lie behind said flange and provided with alongitudinal slot extending into the broad end of the blade with itssides embracing the flat sides of the clamping-plate shank, with meansfor clamping the guard plate and the clamping plate together upon saidblade.

In testimony whereof, I hereunto atiix my signature in the presence oftwo witnesses.

HARRIS o. SHANNON.

Witnesses:

E. L. THons'roN, H. R. SULLIVAN.

